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Add __tlbi_sync_s1ish_kernel() similar to __tlbi_sync_s1ish() and use it for kernel TLB maintenance. Also use this function in flush_tlb_all() which is only used in relation to kernel mappings. Subsequent patches can differentiate between workarounds that apply to user only or both user and kernel. A subsequent patch will add mm_struct to __tlbi_sync_s1ish(). Since arch_tlbbatch_flush() is not specific to an mm, add a corresponding __tlbi_sync_s1ish_batch() helper. Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Reviewed-by: Will Deacon <will@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>